Consider the phase change h2o(l)-> h2o(g) the equation describes the phase change from liquid water to steam. think about the heat flow that is necessary for this change to take place. what do you reduce about the process? it will be
1)exothermic
2) endothermic

How air particles exert a pressure on the inside of the balloon

Which compound contain an iron with a 3+ charge

Balance and in which category does it fit in? single or double displacement or synthesis or decomposition? (a) k2 o → k + o2 (b) na + i2 → nai (c) cu(no3 )2 + naoh → cu(oh)2 + nano3 (d) kclo3 → kcl + o2 (e) ca(no3 )2 + hbr → cabr2 + hno3 (f) sn(oh)2 → sno + h2 o (g) p4 + n2 o → p4 o6 + n2 (h) fe + al2 (so4 )3 → feso4 + al (i) alcl3 + na2 co3 → al2 (co3 )3 + nacl (j) c3 h6 + o2 → co2 + h2 o